#!/usr/bin/env python

af1 = 3.141592654
print("af1的值为：", af1)

af2 = 25.3211
print("af2的类型为：", type(af2))

f1 = 5.12e2
print("f1的值为：", f1)

f2 = 5e2
print("f2的值为：", f2)
print("f2的类型为：", type(f2))
